25 October 1966
USS GEORGE C. MARSHALL (SSBN 654) departed Charleston, S.C., for operational patrol with
16 POLARIS A-3 missiles.
8 February 1973
POSEIDON conversion of USS GEORGE C. MARSHALL (SSBN 654) was completed at
Puget Sound Naval Shipyard. This was the 17th SSBN to be provided with C-3 capability.
2 September 1973
USS GEORGE C. MARSHALL (SSBN 654), the 17th POSEIDON-carrying SSBN,
departed for operational patrol carrying 16 POSEIDON tactical missiles. During
predeployment exercises, MARSHALL launched a C-3 missile during Demonstaration and
Shakedown Operations.
30 March 1977
USS GEORGE C. MARSHALL (SSBN 654) successfully launched two POSEIDON (C-3)
missiles in a Follow-0n Operational Test.
2 February 1980
USS GEORGE C. MARSHALL (SSBN 654) successfully launched three POSEIDON
(C-3) missiles in a Follow-0n Operational Test.
4 February 1980
USS GEORGE C. MARSHALL (SSBN 654) successfully launched one POSEIDON (C-3)
missile in a Follow-0n Operational Test.
11 July 1981
USS GEORGE C. MARSHALL (SSBN 654) successfully launched four POSEIDON
(C-3) missiles in a Follow-0n Operational Test.
7 April 1984
USS GEORGE C. MARSHALL (SSBN 654) completed a POSEIDON (C-3)
re-fueling
overhaul at Newport News Shipbuilding and Dry-dock Company, Newport News, VA. The overhaul
was completed in 28.9 months.
24 July 1984
The Gold Crew of the USS GEORGE C. MARSHALL (SSBN 654) successfully
launched a POSEIDON (C-3) missile in support of its Demonstration and Shakedown
Operations.
16 October 1987
The 60th POSEIDON Follow-on Operational Test was conducted with the
successful launch of four POSEIDON (C-3) missiles by the Gold Crew of USS GEORGE C.
MARSHALL (SSBN 654) .